function posun_right_1()
{
document.all.right_1.src = "grafika/sipky/right_1_z.png";
window.ram.scrollBy(10,0);
cas_1 = setTimeout("posun_right_1()",50);
} 


function posun_left_1()
{
document.all.left_1.src = "grafika/sipky/left_1_z.png";
window.ram.scrollBy(-10,0);
cas_1 = setTimeout("posun_left_1()",50);
}


function posun_vypni()
{

document.all.right_1.src = "grafika/sipky/right_1_v.png";
document.all.left_1.src = "grafika/sipky/left_1_v.png";
clearTimeout(cas_1);
}